PENSION PLANS AND OTHER POST-RETIREMENT BENEFITS - Plan Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Post-retirement benefit obligation
Unfunded commitments	$ 0
Minimum
Post-retirement benefit obligation
Long-term investment horizon	5 years
Minimum | Equity Securities
Post-retirement benefit obligation
Target allocation (as a percent)	70.00%
Maximum
Post-retirement benefit obligation
Redemption notice period	180 days
Long-term investment horizon	15 years
Maximum | Equity Securities
Post-retirement benefit obligation
Target allocation (as a percent)	90.00%
Defined Benefit Plans
Post-retirement benefit obligation
Net plan assets	$ 464,757	$ 617,540	$ 623,826
Expected contribution in the next fiscal year	0
Benefit payments expected to be paid
2023	32,568
2024	33,866
2025	34,648
2026	35,539
2027	36,284
2028-2032	189,696
Defined Benefit Plans | Fair Value Level 1 and Level 2
Post-retirement benefit obligation
Total plan assets	61	484
Defined Benefit Plans | Quoted Prices In Active Markets for Identical Assets (Level 1)
Post-retirement benefit obligation
Total plan assets	61	484
Defined Benefit Plans | Cash and Cash Equivalents [Member]
Post-retirement benefit obligation
Total plan assets	38	459
Defined Benefit Plans | Cash and Cash Equivalents [Member] | Quoted Prices In Active Markets for Identical Assets (Level 1)
Post-retirement benefit obligation
Total plan assets	38	459
Defined Benefit Plans | U.S. common stocks | Fair Value Level 1 and Level 2
Post-retirement benefit obligation
Total plan assets	21	24
Defined Benefit Plans | U.S. common stocks | Quoted Prices In Active Markets for Identical Assets (Level 1)
Post-retirement benefit obligation
Total plan assets	21	24
Defined Benefit Plans | International stocks | Fair Value Level 1 and Level 2
Post-retirement benefit obligation
Total plan assets	2	1
Defined Benefit Plans | International stocks | Quoted Prices In Active Markets for Identical Assets (Level 1)
Post-retirement benefit obligation
Total plan assets	2	1
Defined Benefit Plans | Global | Fair Value Measured at Net Asset Value Per Share
Post-retirement benefit obligation
Total plan assets	154,626	223,101
Defined Benefit Plans | Real Estate | Fair Value Measured at Net Asset Value Per Share
Post-retirement benefit obligation
Total plan assets	96,641	126,980
Defined Benefit Plans | Fixed Income | Fair Value Measured at Net Asset Value Per Share
Post-retirement benefit obligation
Total plan assets	137,174	194,189
Other assets/(liabilities)	(3)
Defined Benefit Plans | Hedge Funds | Fair Value Measured at Net Asset Value Per Share
Post-retirement benefit obligation
Total plan assets	71,519	66,309
Defined Benefit Plans | Short-term investments. | Fair Value Measured at Net Asset Value Per Share
Post-retirement benefit obligation
Total plan assets	4,739	6,477
Post-retirement Benefit Obligations
Post-retirement benefit obligation
Net plan assets	2,693	3,546	$ 3,337
Expected contribution in the next fiscal year	6,200
Benefit payments expected to be paid
2023	6,159
2024	5,558
2025	5,046
2026	4,655
2027	4,400
2028-2032	19,290
Post-retirement Benefit Obligations | Fair Value Measured at Net Asset Value Per Share
Post-retirement benefit obligation
Total plan assets	2,758	3,682
Benefit payments payable	(65)	(136)
Net plan assets	2,693	3,546
Post-retirement Benefit Obligations | Cash and Cash Equivalents [Member]
Post-retirement benefit obligation
Total plan assets	1	3
Post-retirement Benefit Obligations | Cash and Cash Equivalents [Member] | Quoted Prices In Active Markets for Identical Assets (Level 1)
Post-retirement benefit obligation
Total plan assets	1	3
Post-retirement Benefit Obligations | Global | Fair Value Measured at Net Asset Value Per Share
Post-retirement benefit obligation
Total plan assets	917	1,330
Post-retirement Benefit Obligations | Real Estate | Fair Value Measured at Net Asset Value Per Share
Post-retirement benefit obligation
Total plan assets	573	757
Post-retirement Benefit Obligations | Fixed Income | Fair Value Measured at Net Asset Value Per Share
Post-retirement benefit obligation
Total plan assets	814	1,158
Post-retirement Benefit Obligations | Hedge Funds | Fair Value Measured at Net Asset Value Per Share
Post-retirement benefit obligation
Total plan assets	425	395
Post-retirement Benefit Obligations | Short-term investments. | Fair Value Measured at Net Asset Value Per Share
Post-retirement benefit obligation
Total plan assets	$ 28	$ 39